The injury was fluky. Brown planted his foot and his knee gave out. And it certainly was not the way Mundy wanted a starting spot, but that’s the position he’s in less than two weeks before the season opener at Dallas.

The five-year veteran has to develop chemistry with Antrel Rolle in a hurry, and that might be tough. Rolle, after all, is returning from an ankle injury and is not likely to play Thursday at New England in the preseason finale.